/**
 * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2025)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import React, { memo } from "react"

import Dropzone, { FileRejection } from "react-dropzone"

import BaseButton, {
  BaseButtonKind,
  BaseButtonSize,
} from "~lib/components/shared/BaseButton"

import FileDropzoneInstructions from "./FileDropzoneInstructions"
import {
  StyledButtonNoWrapContainer,
  StyledFileDropzoneSection,
} from "./styled-components"
import { getAccept } from "./utils"

export interface Props {
  disabled: boolean
  onDrop: (acceptedFiles: File[], rejectedFiles: FileRejection[]) => void
  multiple: boolean
  acceptedExtensions: string[]
  maxSizeBytes: number
  label: string
  acceptDirectory?: boolean
}

const FileDropzone = ({
  onDrop,
  multiple,
  acceptedExtensions,
  maxSizeBytes,
  disabled,
  label,
  acceptDirectory = false,
}: Props): React.ReactElement => (
  <Dropzone
    onDrop={onDrop}
    multiple={multiple}
    accept={getAccept(acceptedExtensions)}
    maxSize={maxSizeBytes}
    disabled={disabled}
    // react-dropzone v12+ uses the File System Access API by default,
    // causing the bug described in https://github.com/streamlit/streamlit/issues/6176.
    useFsAccessApi={false}
  >
    {({ getRootProps, getInputProps }) => {
      const inputProps = getInputProps({
        multiple: multiple || !!acceptDirectory,
      })

      return (
        <StyledFileDropzoneSection
          {...getRootProps()}
          data-testid="stFileUploaderDropzone"
          isDisabled={disabled}
          aria-label={label}
          aria-disabled={disabled}
        >
          <input
            data-testid="stFileUploaderDropzoneInput"
            {...inputProps}
            {...(acceptDirectory && { webkitdirectory: "" })}
          />
          <FileDropzoneInstructions
            multiple={multiple}
            acceptedExtensions={acceptedExtensions}
            maxSizeBytes={maxSizeBytes}
            acceptDirectory={acceptDirectory}
            disabled={disabled}
          />
          <StyledButtonNoWrapContainer>
            <BaseButton
              kind={BaseButtonKind.SECONDARY}
              disabled={disabled}
              size={BaseButtonSize.SMALL}
            >
              {acceptDirectory ? "Browse directories" : "Browse files"}
            </BaseButton>
          </StyledButtonNoWrapContainer>
        </StyledFileDropzoneSection>
      )
    }}
  </Dropzone>
)

export default memo(FileDropzone)
